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United States Patent | 6,159,363 |
Collins ,   et al. | December 12, 2000 |
A gravity-flow water filter cartridge for use in a drinking water carafe or the like includes a high-surface area cyst reduction filter element disposed in a water-retaining reservoir within the cartridge; the reservoir retains sufficient water between filtering and during dispensing cycles to maintain the filter element in a fully immersed state, whereby the primed (air-free) condition of the filter necessary for fast gravity flow at high cyst reduction efficiency is maintained.
Inventors: | Collins; Thomas A. (Horseheads, NY); Cutler; Willard A. (Big Flats, NY); Hickman; David L. (Big Flats, NY); Mack; Alfred N. (Corning, NY) |
Assignee: | Corning Incorporated (Corning, NY) |
Appl. No.: | 293015 |
Filed: | April 16, 1999 |
Current U.S. Class: | 210/136; 210/248; 210/266; 210/433.1; 210/472; 210/473 |
Intern'l Class: | B01D 035/153 |
Field of Search: | 210/136,266,282,284,464,472,473,474,476,248,433.1,434,97,120,436 222/189.06,189.08 |
5076922 | Dec., 1991 | Deare | 210/282. |
5562824 | Oct., 1996 | Magnusson | 210/266. |
5830360 | Nov., 1998 | Mozayeni | 210/266. |
Foreign Patent Documents | |||
2197647 | Mar., 1990 | GB. | |
96/31440 | Oct., 1996 | WO. |